Ventilation control is the most challenge work on the environment of chicken house, It
is need more attention .Ventilation could have affection on the air
quality ,temperature ,humidification .If have no appropriate
ventilation and it may need to raise density adjustment.

The effect of ventilation :

1.According to the air of change could wipe out the waste gas and bad
smell then it could bring the fresh air and meet the chicken demand
to oxygen .

2.Uniform distribution of fresh air and could not let the chicken
group get sick.

Greenhouse heat source from: heat conduction, thermal radiation.
Heat conduction and thermal radiation heat load depends on the
weather conditions, greenhouse structures and greenhouse shade
treatment. All of these lead to increased greenhouse heat and
humidity should be ruled out by the wind, so suitable for indoor
ventilation is a good pad - fan based cooling system.

The following is the calculation of greenhouse ventilation rate
often used when the rated ventilation Experience:

Calculate the required ventilation rate, the pad area in
determining when to consider the pad area must consider the
efficiency of the wet curtain, resistance and the economy to
achieve the right balance between. Pad installed the more the
better the cooling effect of course, the ventilation resistance is
also smaller, but the investment is higher; and vice versa.
Therefore, we propose to choose the light of experience following
the curtain wind speed: 150 mm thick pad :1.2-1.5 m / s

Use the principle of negative pressure cross-ventilation, to bring
the fresh air in from the opposite of the installation
position——door or window naturally, and extract the indoor hot gas
rapidly.Any improper ventilation problem can be solved. The cooling
and ventilation efficiency can reach as high as 90%-97%.